JP2775425B2 - Conduit fixing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conduit tube fixing device for fixing a conduit having a corrugated outer peripheral surface to a fixed member such as a wiring box or a power supply box.

[0002]

2. Description of the Related Art Conventionally, as a device of this type, a fixed cylindrical body whose distal end portion can be reduced in diameter by a split groove formed in the distal end portion, and a male screw portion formed on the outer peripheral surface of the distal end portion of the fixed cylindrical body. After fixing the base end of the fixed cylindrical body to a fixed member such as a wiring box, the distal end of the conduit is inserted into the distal end of the fixed cylindrical body, and then, In some cases, the nut is screwed in to reduce the diameter of the distal end portion of the fixed tubular body and press-fit the wire tube to the conduit, thereby fixing the conduit to the member to be fixed via the fixed tubular body.

[0003]

In the above-mentioned conventional configuration,
The entire fixing device is enlarged so that the fixing cylinder and the nut can sufficiently withstand a strong screw fastening force. Therefore, when a fixed member such as a wiring box is provided in a narrow space, it is extremely difficult to perform the fixing work. Also, fixing the conduit inserted at the tip of the fixed cylinder,
In order to release the fixed state, it is necessary to screw the nut many times and to loosen the screw, and there is a problem that the operation of fixing and releasing the fixing is troublesome.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional disadvantages, an object of the present invention is to provide a conduit tube fixing device which is small in size and capable of performing fixing and releasing operations quickly and easily.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, an invention according to claim 1 is a conduit for fixing a conduit having a corrugated outer peripheral surface to a fixed member such as a wiring box or a power supply box. A fixed cylindrical body made of a synthetic resin having a base end connected to the member to be fixed and having the distal end inserted into the conduit, and slidably mounted on the distal end of the fixed cylindrical body. A cylindrical sliding ring made of synthetic resin that fits over the outer periphery of the fixed cylindrical body; the fixed cylindrical body has a plurality of openings formed at a front end thereof at predetermined circumferential intervals; An annular projection formed integrally with the edge and for retaining the sliding ring externally fitted to the fixed tubular body, and an engagement step formed at a base end side peripheral edge of each of the openings. Wherein the sliding ring comprises a ring-shaped body and the ring-shaped body
Along with a plurality of elastic pieces integrally projecting at predetermined intervals in the circumferential direction on a cylindrical inner peripheral surface of the cylindrical body, a tip of each of the elastic pieces is inserted into a tip of the fixed cylindrical body. engaging claw portion engaged with the outer peripheral surface recess of the conduit is integrally formed, a plurality of the elastic pieces of the sliding ring when fitted to cause the sliding ring on the tip portion of the fixed cylindrical member Are separately inserted into a plurality of openings at the distal end of the fixed cylindrical body, and when the sliding ring is slid toward the base end side of the fixed cylindrical body, the engaging step portion has the elasticity. The engaging claw is engaged with a base end of the piece so that the elastic piece is elastically deformed outward.
The portion is separated from the concave portion on the outer peripheral surface of the conduit tube .

[0006]

According to the first aspect of the present invention, when the distal end portion of the conduit is inserted into the distal end portion of the fixed cylindrical body having the base end portion fixed to the member to be fixed, the sliding member is fitted to the fixed cylindrical body. It is integrally protruded from the cylindrical inner peripheral surface of the ring-shaped main body of the moving ring.
Engaging pawl of the tip by the elastic force of the elastic pieces are engages with the outer peripheral surface recess of said conduit. Further, an engaging step formed on a base end side peripheral portion of the opening of the fixed cylinder is configured such that when the sliding ring is slid toward the base end of the fixed cylinder, a base end of the elastic piece is formed. And the elastic piece is elastically deformed outward . Therefore, after fixing the conduit, for example, when removing the conduit from the fixed cylinder for adjusting the length of the conduit, first, the sliding ring is slid toward the base end side of the fixed cylinder. As a result, the base end of the elastic piece engages with the engaging step formed on the base end peripheral portion of the opening, and the elastic piece is elastically deformed outward, and the engaging claw at the distal end is connected to the electric wire. The fixed state of the conduit is released by separating from the concave portion on the outer peripheral surface of the tube. Then, only by pulling the conduit, the distal end portion of the conduit can be easily pulled out of the fixed cylinder.

[0007] In particular, according to the conduit tube fixing device of the present invention, the place where the elastic piece is provided is attached to the sliding ring .
When the sliding ring is slid toward the base end side of the fixed cylindrical body in order to separate the engaging claw portion from the concave portion on the outer peripheral surface of the conduit, since the inner peripheral surface of the ring-shaped main body is cylindrical. This means that any part of the sliding ring may be grasped by the finger of the hand. In other words, when the cylindrical slide ring is grasped with the finger of the hand and the slide ring is fitted on the fixed cylinder or slid toward the base end of the fixed cylinder, the slide ring is grasped. Even if the location corresponds to the location where the elastic piece is provided, the deformation action of the elastic piece is not impaired.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a state in which a conduit 1 having a corrugated outer peripheral surface is fixed to a wall 2a of a fixed member 2 such as a wiring box or a power supply box via a fixing device 3 of the present invention. The fixing device 3 includes a fixing cylinder 4 made of synthetic resin,
And a sliding ring 5 made of synthetic resin which is slidably fitted to the fixed cylindrical body 4.

In FIG. 1, reference numeral 6 denotes wires such as electric wires and cables inserted into the conduit tube 1.

As shown in FIG. 3, the fixed cylindrical body 4 has a small-diameter base end 4a having an external thread 8 formed on the outer peripheral surface thereof, and a large-diameter base integrally formed concentrically with the small-diameter base end 4a. A small-diameter proximal end 4a and a large-diameter distal end 4b on the outer peripheral surface thereof.
And a flange portion 4c is formed integrally therewith.

A pair of rectangular openings 9, 9 are provided at the large-diameter distal end 4b of the fixed cylindrical body 4 at predetermined intervals in the circumferential direction. An annular projection 10 is integrally formed, and a plurality of split grooves 11 are formed from the leading edge to the small-diameter base end 4a. Therefore, when the sliding ring 5 is externally fitted to the large-diameter distal end 4b of the fixed cylindrical body 4, the sliding ring 5 is attached to the large-diameter distal end 4b while the distal end of the large-diameter distal end 4b is reduced in diameter. If the user grips an arbitrary place by hand and fits the sliding ring 5 to get over the annular protrusion 10, the sliding ring 5 can be fitted to the large-diameter distal end 4b.

The sliding ring 5 is provided with a ring-shaped main body 5a and a pair of substantially L-shaped members protruding integrally with the cylindrical inner peripheral surface of the ring-shaped main body 5a and individually fitted into the openings 9 and 9, respectively. FIG. 1 includes a plurality of U-shaped elastic pieces 5b, 5b, and engaging claws 5c, 5c integrally formed on the distal ends of the respective elastic pieces 5b, 5b and engaging with the outer peripheral surface recess 1a of the conduit tube 1. As shown in FIG. 4, the inner surface 12 of the engaging claw portions 5c, 5c is
The outer surface 13 is formed in a vertical shape so as to prevent the conduit tube 1 from being inserted into the fixed cylindrical body 4. Further, a pair of protrusions 5 integrally protruding from the leading edge of the ring-shaped main body 5a.
d and 5d are movably fitted into notches 10a and 10a formed in the annular protrusion 10 for retaining the sliding ring, whereby the sliding ring 5 extends along the axial direction of the fixed cylindrical body 4. And can be slid smoothly.

In the above configuration, when the conduit 1 is fixed to the fixed member 2, as shown in FIG.
Of the small-diameter base end portion 4a of the through-hole 1 in the wall portion 2a of the fixed member 2.
4, the nut 15 is screwed into the male screw portion 8 of the small-diameter proximal end 4a, and the small-diameter proximal end 4a is fixed to the wall 2a. Then, the distal end of the conduit tube 1 is inserted into the large-diameter distal end 4b. Just insert the part. As a result, as shown in FIG. 4, the distal end portion of the conduit tube 1 has the inclined outer surface 1 of the engaging claw portions 5c, 5c.
3, the elastic pieces 5b, 5b are elastically deformed, and the engaging claws 5c, 5c are pushed out in the direction of the arrow .
The distal end portion of the conduit tube 1 can be easily inserted into the fixed cylindrical body 4, and when the insertion is stopped, as shown in FIG. 5
c, 5c is the outer peripheral surface recess 1 of the conduit tube 1.
a, the conduit 1 can be fixed to the fixed member 2 via the fixing cylinder 4.

As shown in FIG. 5, the elastic pieces 5b, 5b
The engaging claw portions 5c, 5c are respectively provided on the outer peripheral surface of the distal end of FIG.
Tapered surfaces 17 and 18 for moving the wire tube 1 toward the center thereof, and when the conduit tube 1 inserted into the fixed cylindrical body 4 is pulled out in the direction indicated by an arrow, the engaging claw portions 5c and 5c and the elastic pieces are formed. The sliding ring 5 is also slid in the same direction via 5b, 5b, and is guided by the tapered surfaces 17, 18 so that the outer peripheral surfaces of the distal ends of the elastic pieces 5b, 5b are formed on the distal peripheral edge of the openings 9, 9, respectively. As the engaging claws 5c and 5c enter the lower side and bite into the outer peripheral surface concave portion 1a of the conduit tube 1, the conduit tube 1 can be more securely fixed. In this embodiment, the outer peripheral surfaces of the distal ends of the elastic pieces 5b, 5b and the openings 9, 9 opposed thereto are provided.
The tapered surfaces 17 and 18 are formed on both the peripheral edge portion on the front end side and the tapered surface 17 (or 18) on only one of them.
May be formed.

Further, as shown in FIG. 6, when the sliding ring 5 is slid to the base end side of the fixed cylindrical body 4 as shown by an arrow at the base end side peripheral portion of the openings 9 and 9. The elastic pieces 5b, 5b engage with the base ends of the elastic pieces 5b, 5b to elastically deform outward.
And the engaging claw portions 5c, 5c at the tips thereof are opened.
An engagement stepped portion 20 retracted into the inside is formed.

In the above configuration, when the conduit 1 is to be detached from the fixed cylinder 4 to adjust the length of the conduit 1 from the fixed state of the conduit 1 shown in FIG. Is gripped by hand and slid to the base end side of the fixed cylinder 4. As a result, as shown in FIG. 6, the base ends of the elastic pieces 5b, 5b are engaged with the engaging step portions 20, and the elastic pieces 5b, 5b are elastically deformed outward, so that the engaging claw portions are formed. 5
The c and 5c are separated from the outer peripheral surface concave portion 1a of the conduit tube 1 and the engagement between the conduit tube 1 and the fixed cylindrical body 4 is released. continue,
Just by pulling the conduit 1, the distal end of the conduit 1 can be easily pulled out of the fixed cylinder 4.

In the above embodiment, the elastic piece 5b and the opening 9
Are provided in pairs, however, three or more may be provided, respectively, whereby the conduit tube 1 can be more securely fixed.

[0018]

According to the first aspect of the present invention, a force corresponding to an excessive screw fastening force as in the conventional example is not applied to the fixed cylinder and the sliding ring. The ring can be made thin, and the entire fixing device can be reduced in size. Therefore, even when a fixed member such as a wiring box is provided in a narrow space, the fixing operation can be performed quickly and easily.

Further, only by sliding the sliding ring toward the base end of the fixed cylindrical body, the elastic piece provided on the sliding ring is elastically deformed by the engaging step, and the engaging claw is formed. Is separated from the outer peripheral surface concave portion of the conduit, and the fixed state of the conduit can be easily released. In particular, in the present invention, the location where the elastic piece is provided is the location of the sliding ring .
Operation when the sliding ring is slid toward the base end side of the fixed cylindrical body in order to separate the engaging claw portion from the concave portion on the outer peripheral surface of the conduit tube because the inner peripheral surface of the cylindrical body is a cylindrical inner peripheral surface. The ring-shaped body even if you grab any part of the sliding ring with your fingers
Can be performed without deformation , and the operability is excellent.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a state in which a conduit is fixed to a member to be fixed by a fixing device according to one embodiment of the present invention.

FIG. 2 is a view as viewed in the direction of arrows AA in FIG. 1;

FIG. 3 is an exploded perspective view of the fixing device.

FIG. 4 is a longitudinal sectional view of a main part showing a procedure for fixing the conduit tube.

FIG. 5 is a longitudinal sectional view of a main part showing a fixed state of the conduit tube.

FIG. 6 is a longitudinal sectional view of a main part showing a procedure for removing the conduit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conduit tube 1a Outer peripheral surface concave part of a conduit tube 2 Fixed member 3 Fixing device 4 Fixed cylinder 4a Base end of fixed cylinder 4b Tip of fixed cylinder 4 5 Slide ring 5b Elastic piece 5c Engagement claw 9 Opening 10 Annular projection 20 Engagement step

Claims (1)

(57) [Claims] 1. A conduit tube fixing device for fixing a conduit having a corrugated outer peripheral surface to a fixed member such as a wiring box or a power supply box, wherein a base end portion is connected to the fixed member, A fixed cylindrical body made of synthetic resin into which the conduit is inserted in the distal end thereof, and a cylindrical sliding ring made of synthetic resin which is slidably fitted to the distal end of the fixed cylindrical body, The fixed cylinder has a plurality of openings penetratingly provided at a distal end thereof at predetermined intervals in a circumferential direction, and the sliding ring integrally formed at a distal end edge of an outer peripheral surface thereof and externally fitted to the fixed cylinder. A ring-shaped main body and a circle of the ring-shaped main body. <br/> Having a plurality of elastic pieces integrally projecting from the cylindrical inner peripheral surface at predetermined circumferential intervals In, the tip of each of the elastic pieces, the engagement claw portion engaged with the outer peripheral surface recess of the fixed cylindrical member said conduit which is inserted in the distal end portion of which is integrally formed, of the fixed cylindrical member When the sliding ring is fitted to the tip
A plurality of the elastic pieces of the sliding ring can have, is fitted into each other to the fixed cylindrical member in a plurality of openings in the distal end portion, also, before
The elastic piece the engaging Godan portion is engaged with the base end of the elastic piece is elastically deformed outwardly when the serial sliding ring is slid on the base end side of the fixed cylindrical member Engage the hook with the electric wire
An apparatus for fixing a conduit tube, which is separated from a concave portion on an outer peripheral surface of a tube.